Create virus scan model to store clamav result

app/models/champ.rb

@@ -3,6 +3,7 @@ class Champ < ApplicationRecord
   belongs_to :type_de_champ, inverse_of: :champ
   has_many :commentaires
   has_one_attached :piece_justificative_file
+  has_one :virus_scan
 
   delegate :libelle, :type_champ, :order_place, :mandatory?, :description, :drop_down_list, to: :type_de_champ
 

app/models/virus_scan.rb

@@ -0,0 +1,17 @@
+class VirusScan < ApplicationRecord
+  belongs_to :champ
+
+  enum status: {
+    pending: 'pending',
+    safe: 'safe',
+    infected: 'infected',
+  }
+
+  validates :champ_id, uniqueness: { scope: :blob_key }
+
+  after_create :perform_scan
+
+  def perform_scan
+    AntiVirusJob.perform_later(self)
+  end
+end

db/migrate/20180511124302_create_virus_scans.rb

@@ -0,0 +1,12 @@
+class CreateVirusScans < ActiveRecord::Migration[5.2]
+  def change
+    create_table :virus_scans do |t|
+      t.datetime :scanned_at
+      t.string :status
+      t.references :champ, index: true
+      t.string :blob_key
+
+      t.timestamps
+    end
+  end
+end

db/schema.rb

@@ -594,6 +594,16 @@ ActiveRecord::Schema.define(version: 2018_06_01_084546) do
     t.index ["reset_password_token"], name: "index_users_on_reset_password_token", unique: true
   end
 
+  create_table "virus_scans", force: :cascade do |t|
+    t.datetime "scanned_at"
+    t.string "status"
+    t.bigint "champ_id"
+    t.string "blob_key"
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["champ_id"], name: "index_virus_scans_on_champ_id"
+  end
+
   create_table "without_continuation_mails", id: :serial, force: :cascade do |t|
     t.text "body"
     t.string "subject"